Spider control built around widows and their prey

Two get real attention: the western black widow, glossy black with a red hourglass underneath, and the brown widow, an invasive relative now common across Southern California. Widow bites need medical attention. Brown recluse spiders are not established in California despite frequent misidentification, and most other house spiders are harmless.

Low, dark, undisturbed spots with an irregular, strong web: under patio furniture, in block wall gaps, meter boxes, garage corners, pool equipment, stacked pots and woodpiles. Brown widows add spiky round egg sacs under railings, chairs and eaves.

Spiders follow food. A house with steady insect traffic around lights, windows and doors feeds spiders, so cutting their prey through perimeter treatment and light changes reduces spiders more lastingly than chasing webs.

Yes. Webs and egg sacs are swept from eaves, windows and exterior structures as part of the visit, because each brown widow sac can hold hundreds of spiderlings and removing them is as important as treating adults.

Spiders do not groom like insects, so they pick up surface treatments less readily. Effective work combines direct treatment of harborage and webs, egg sac removal, a perimeter that cuts their insect prey, and decluttering the hiding spots.